CD8A and neoplasm: Treatment with mHSP/Ps increased the proportion of CD8+ T cells to 9.1 5% at about the same time of tumor establishment (day 26), With mHSP/Ps plus CY plus IL-12 treatment, the CD8+ population was higher (9.21 ± 1.45%) than that in mHSP/P-treated mice and untreated tumor-bearing mice.